Helen Keller's Slurred Fingers

Alright, listen up, you dummy. Helen Keller couldn't see or hear, right? So, she "talked" by feeling stuff with her fingers. The joke is that she's slurring her "words" 'cause she's drunk, but instead of slurring her speech, she's slurring her finger-spelling. Get it? Probably not, since you are probably just as smart as Helen, if she was drunk.